if the boxter calipers are anything like the 993 calipers, they will not fit
under the 15" rim. some 16" may not even work. when i had todd c. put on
993 brakes on my CQ, my rims barely fit, and my bbs need spacers (both
16x7.5, et35). check first, then buy.
-eric ferguson
'90 CQ 20v, not so stock